Thermostatic valve.



J. MESSMER.

THERMOSTATIC VALVE.

. APPLICATION man SEPT. 26. 911.

1,273,899. Patented July 3o, 1918.

Pagg-.-

UNITED STATES PATENT OFFICE.

JOSEPH MESSMER, OP KIRKWOOD, MISSOURI, AssiGNoR To CONTINENTAL BRASS le POUNDRIES COMPANY, OP ST. LOUIS, MISSOURI,l A CORPORATION OF MISSOURI.

THERMO-STATIC VALVE,

Specification of ietters Patent.'

atentea Juiyeo, 191,8.

Application filed September 26, 1917. Serial'N O. 193,268.

To all whom t may concern.' y

Be it known that I, JoSEPir MESSMER, a citizen of the United States of America, residing in the city of Kirkwood, county of St. Louis, State of Missouri, have invented certain new and useful Improvements Vvin Thermostatic Valves, of which, the following is a specification. y

This invention relates primarily to valves designed to effect improvement in the operation of that modern method of heating which has come to be known as the vapor vacuum system, wherein all water of condensation and air collecting` in the radiators is conveyed to pipes located in the basement ofthe building and carried past a thermostatic valve adapted to permit the escape of air while insuring the return of Said water to the boiler; the object ofthis invention be ing to afford a valve of the character specified embracing novel means which, 'while permitting theescape of air, will prevent its Suction into the system and close against the escape of Steam orfwater carried by said pipes which shall hereinafter be referred to as the air exhaust line.-

Referring to the accompanying drawing, `wherein like numerals refer to like parts throughout the several views,l Figure 1 is an isometric view depicting the typical manner of connecting a' radiator to'fthe furnace in the particular system of heating hereinvolvcd; Fig. 2 a rsectional -elevationfofjthe thermostatic valve; Fig. 3 a cross-section of the valve taken along line 3 3 of Fig. 2; Fig. 4 a. cross-section taken along line 4 4 oi Fig. 2; Fig. 5 a cross-Section taken along line 5 5 of Fig. 2; and Fig. G a cross-section taken along line 6-6 of Fig. 2.

By reference to Fig. 1 it will be appreciated that Steam generated within boiler 1 is conveyed by pipes 2 and 3 into the main circulating pipes 4 and carried thence to radiator 5 by riser 6 which is Surmounted with a control valve 7.V The base of each radiator is connected by pipe 8 with the air` exhaust line 9 and it will be noted that the valve of my invention is interposed at a point adjacent to the vertically disposed section 9a of said line which connects with the boiler. Said valve comprises a pipe 10 threaded at 11 for insertion in the air eX- haust line and Serving as the housing for a hollow cylindrical oat 12 whose lower end is closed 'by a removable threaded cap 14.

Said float is retained in vertical position by ribs 15 cast upon the inner surface of said pipe, its downward movement being limited by Shoulder 16 while upon being raised-'its rounded upper extremity engages the concave seat 17 provided invplate V18 and thus closes port 19 above'whi'ch isfdisposed a baffle-plate 20. The upper end of pipe 1Q is cast integral with a cylindrical shell '21: to which is coupled a plug 22 provided with a threaded bore 23 closed by a removabllecap 24, said bore serving to support the threaded extremity ofthe valve-stein 25which is slotvted'at 26 to permit adjustment by aid of a screwdriver.

Secured upon the opposite extremity of Stem 25 is a thin metal disk 27 to which is soldered the flange 2S of a companion disk 29, therlatter being aflixed to a vshort rod 30 and the annular compartment 31 -thus formed being filled with a readilyV `Vaporizable liquid So Yas to effect dieten-tion of disk 29, with consequent forward movement of said rod, coincident with the passagey of steam into chamber 32. Rod-30Y is connectwhich is capped with a disk 34 of ruobe'r or other suitable material and projects within sleeve 35, it being obsei-,ved that the latter is provided withV ribs '36 for the Support of the 'plunger' 'and' that, as showniniFig. 3, lSpaces 37 are provided between said Sleeve and plunger for the escape of air.v vDisk 34 'is vdisposed in close proximity to port 38 and so ed by Set-screw 83 with the plunger-33? tion with atmospheric pressure, to retain the hingedly supported disk r39 closely Y against the external rim of said port and thus prevents the admission of air.

Havin vthus fully described the structure of the va ve, we may now proceed to its Operation and for present purposes Shall assume that the furnace has been checked for a period sufficient to allow the radiators and supply pipes to cool. VThe drafts being opened and the boiler heated, the steam generated is conveyed by pipes 2, 3, 4 and riser 6 to the radiators and condensed to a degree while filling the same. The water resulting from this condensation, together with ,the

air which has accumulated in the supply pipes and radiators, is eventually forced from the latter into pipe 8 and thence carried to the valve above described by the return line 9. Upon reaching this point the air (obviously preceding the water) seeks the path of least resistance and passing upward through the space provided between member 12 and the inner surface of pipe 10 escapes through port 3S. The water coming next and with considerable force lifts member 12 against seat 1T and thus closes port 19, but as the flow thereof is, at the outset, intermittent it follows that member 12 may momentarily descend sufficiently to permit the passage through said port of spurts or jets Vcarrying sediment collected from the radiators and this solid matter might accumulate to such an extent as to obstruct the closing of port 3S were it not for the provision of battle-plate 20 which checks the escaping water and deflects the sediment backward through port 19. The water being finally forced downward through section 9a of the return line into the boiler by pressure of the steam which follows its travel through said line, member 12 is released from its seat and the steam then passing into the upper portion of the valve effects expansion of the fluid within compartment 31 with the result that port 38 is automatically closed.

Having thus described the invention, what I claim as new and desire to secure by Letters-Patent is l. A valve for heating systems, comprising a tube connected with the air-exhaust line of the system having a port for the escape of air, a plunger disposed within said tube opposite said port, a thermally sensitive element mounted upon the stem of said plunger, 'a member adapted to prevent the admission of air through said port, and a baille-plate disposed between said line and tube.

2. A valve for heating systems, comprising a tube connected with the air-exhaust line of the system having a port for the escape of air, a plunger disposed withinsaid tube opposite said port, a thermally sensitive element mounted upon the stem of said plunger, a member positioned. eXteriorly of said tube adapted to prevent the admission of air through said port, and a baffle-plate disposed between said line and tube.

3. A valve for heating` systems, comprising a tube connected with the air-exhaust line of the system having a port for the escape of air, a plunger disposed within said tube opposite said port, a. thermally sensitive element mounted upon the stem of said plunger, a member adapted to prevent the admission of air through said port, a baiieplate disposed between said line and tube, and means for preventing the passage of water from said line into said tube.

Ll. A valve for heating systems, comprising a pipe projecting from the air-exhaust line of the system, a tube connected with said pipe having a port for the escape of air, a restricted opening between said tube and pipe, a baffle-plate disposed above said opening, a float within said pipe adapted to close said opening, a plunger disposed within said tube opposite lsaid port, a thermally sensitive element motmted upon the stem of said plunger, and a member adapted to prevent the admission of air through said port.

JOSEPH MESSMER.

Witnesses:

WV. KEANE SMALL, H. M. PRENDIVILLE.

Copie: of this patent may be obtained for five cents each, by addressing the Commissioner of Patenti, Washington, D. C. 

